use ::rltk::{Point, Rltk}; use ::specs::prelude::*; use crate::map::tile_glyph; use crate::{colors, Hidden, Map, Position, Renderable}; const SHOW_BOUNDARIES: bool = false; pub fn get_screen_bounds(ecs: &World, _ctx: &mut Rltk) -> (i32, i32, i32, i32) { let player_pos = ecs.fetch::(); // let (x_chars, y_chars) = ctx.get_char_size(); let (x_chars, y_chars) = (48, 44); let center_x = (x_chars / 2) as i32; let center_y = (y_chars / 2) as i32; let min_x = player_pos.x - center_x; let max_x = min_x + x_chars as i32; let min_y = player_pos.y - center_y; let max_y = min_y + y_chars as i32; (min_x, max_x, min_y, max_y) } pub fn render_camera(ecs: &World, ctx: &mut Rltk) { let map = ecs.fetch::(); let (min_x, max_x, min_y, max_y) = get_screen_bounds(ecs, ctx); // Render the Map let map_width = map.width - 1; let map_height = map.height - 1; let mut y = 0; #[allow(clippy::explicit_counter_loop)] for ty in min_y..max_y { let mut x = 0; for tx in min_x..max_x { if tx > 0 && tx < map_width && ty > 0 && ty < map_height { let idx = map.xy_idx(tx, ty); if map.revealed_tiles[idx] { let (glyph, fg, bg) = tile_glyph(idx, &*map); ctx.set(x, y, fg, bg, glyph); } } else if SHOW_BOUNDARIES { ctx.set(x, y, colors::GRAY, colors::BLACK, rltk::to_cp437('·')); } x += 1; } y += 1; } // Render entities let positions = ecs.read_storage::(); let renderables = ecs.read_storage::(); let hidden = ecs.read_storage::(); let map = ecs.fetch::(); let mut data = (&positions, &renderables, !&hidden) .join() .collect::>(); data.sort_by(|&a, &b| b.1.render_order.cmp(&a.1.render_order)); for (pos, render, _hidden) in data.iter() { let idx = map.xy_idx(pos.x, pos.y); if map.visible_tiles[idx] { let entity_screen_x = pos.x - min_x; let entity_screen_y = pos.y - min_y; if entity_screen_x > 0 && entity_screen_x < map_width && entity_screen_y > 0 && entity_screen_y < map_height { ctx.set( entity_screen_x, entity_screen_y, render.fg, render.bg, render.glyph, ); } } } } pub fn render_debug_map(map: &Map, ctx: &mut Rltk) { let player_pos = Point::new(map.width / 2, map.height / 2); let (x_chars, y_chars) = ctx.get_char_size(); let center_x = (x_chars / 2) as i32; let center_y = (y_chars / 2) as i32; let min_x = player_pos.x - center_x; let max_x = min_x + x_chars as i32; let min_y = player_pos.y - center_y; let max_y = min_y + y_chars as i32; let map_width = map.width - 1; let map_height = map.height - 1; let mut y = 0; #[allow(clippy::explicit_counter_loop)] for ty in min_y..max_y { let mut x = 0; for tx in min_x..max_x { if tx > 0 && tx < map_width && ty > 0 && ty < map_height { let idx = map.xy_idx(tx, ty); if map.revealed_tiles[idx] { let (glyph, fg, bg) = tile_glyph(idx, &*map); ctx.set(x, y, fg, bg, glyph); } } else if SHOW_BOUNDARIES { ctx.set(x, y, colors::GRAY, colors::BLACK, rltk::to_cp437('·')); } x += 1; } y += 1; } }